My 2009 Brompton badly needed a refresh… it showed “100% wear” with the chain wear indicator tool…
So I changed the full drivetrain :
1) the bottom bracket (Shimano BB-UN300 68×118),
2) the chainring (Brompton 44t),
3) the cogs (Brompton 13t and 16t)
4) and the chain (SRAM PC850).
Ready for a test ride tomorrow !
by Defiant-Ad5145